[tex4ht] another strange error when using make4ht with mathjax mode

[Nasser M. Abbasi]

Hello;

This MWE only fails to compile when using make4ht in mathjax mode.

It is snippet from old code. May be not well written. But
this used to compile OK and still compiles OK when not using
mathjax mode in make4ht.

--------------------------------
\documentclass[11pt]{article}
\usepackage{amsmath,mathtools,amssymb}

\begin{document}
\begin{tabular}[c]{|l|l|}\hline
$
   \begin{tabular}[c]{l}%
     $i\in C(J)$\\
     $j\notin C(J)$
\end{tabular}
$ & $f_{ij}=0$\\\hline
\end{tabular}
\end{document}
------------------------------------

Now when I compile it with mathjax, it gives this error

-------------------------------------
(/usr/local/texlive/2018/texmf-dist/tex/latex/amsfonts/umsb.fd)
(/usr/local/texlive/2018/texmf-dist/tex/latex/lm/ot1lmtt.fd)
! Missing $ inserted.
<inserted text>
$
l.10     $j\notin
                 C(J)$
? x
----------------------------------

command used

make4ht -ulm default  -c  ./nma_mathjax.cfg foo.tex
        "htm,0,notoc*,p-width,charset=utf-8" " -cunihtf -utf8"

Where nma_mathjax.cfg is

--------------------
\RequirePackage{mathjax-latex-4ht}
\Preamble{xhtml}
\begin{document}
\EndPreamble
-------------

And mathjax-latex-4ht.sty is

https://github.com/michal-h21/helpers4ht/blob/master/mathjax-latex-4ht.sty

Why does it fail only in mathjax mode? It compiles OK in lulatex,
and svg.

TL 2018 on Linux.

Thank you,
---Nasser